Ruff v0.16.0 🔗
<p><strong><a href="https://astral.sh/blog/ruff-v0.16.0">Ruff v0.16.0</a></strong></p> Astral shipped a significant new version of their Ruff Py [...]
Simon Willison's Weblog
Posts
Quoting Boris Cherny 🔗
<blockquote cite="https://twitter.com/bcherny/status/2080713091688583312"><p>More than any of these eval scores, what is most exciting to me is s [...]
Introducing Claude Opus 5 🔗
<p><strong><a href="https://www.anthropic.com/news/claude-opus-5">Introducing Claude Opus 5</a></strong></p> I've been offline <a href="https:// [...]
The first known runaway AI agent - or a very bad marketing stunt? 🔗
<p><strong><a href="https://martinalderson.com/posts/huggingface-openai-exploit/">The first known runaway AI agent - or a very bad marketing stu [...]
Quoting Seth Larson 🔗
<blockquote cite="https://blog.pypi.org/posts/2026-07-22-releases-now-reject-new-files-after-14-days/"><p>The Python Package Index (PyPI) now rej [...]
Quoting Thomas Ptacek 🔗
<blockquote cite="https://twitter.com/tqbf/status/2080045032162173329"><p>I genuinely believe that if you took an open weights model from 2025 an [...]
OpenAI’s accidental cyberattack against Hugging Face is science fiction that happened 🔗
<p>This story is wild. The short version: OpenAI were running a cybersecurity test against an unreleased model, with the model's guardrail featur [...]
Are AI labs pelicanmaxxing? 🔗
<p><strong><a href="https://dylancastillo.co/posts/pelicanmaxxing.html">Are AI labs pelicanmaxxing?</a></strong></p> Excellent piece of work by [...]
Orchestrions 🔗
<p>San Francisco tip: it only costs around $15 ($10 in quarters plus a $5 bill for the self-playing violin) to activate every single Orchestrion [...]
California Sea Lion 🔗
<p><img src="https://static.inaturalist.org/photos/702321069/large.jpg" alt="California Sea Lion"></p><p><img src="https://static.inatur [...]
Nativ: Run AI models locally on your Mac 🔗
<p><strong><a href="https://blaizzy.github.io/nativ/">Nativ: Run AI models locally on your Mac</a></strong></p> Prince Canuma is the developer b [...]
A Fireside Chat with Cat and Thariq from the Claude Code team 🔗
<p>Earlier this month I hosted a fireside chat session at the <a href="https://www.ai.engineer/worldsfair/2026">AI Engineer World's Fair</a> with [...]
Reverse-engineering is cheap now 🔗
<p>I keep hearing anecdotes from people who used coding agents to reverse-engineer and automate devices in their homes.</p> <p>I think this is an [...]
Who’s Afraid of Chinese Models? 🔗
<p><strong><a href="https://stratechery.com/2026/whos-afraid-of-chinese-models/">Who’s Afraid of Chinese Models?</a></strong></p> Interesting pr [...]
Quoting Sam Altman 🔗
<blockquote cite="https://twitter.com/techemails/status/2078854346683678927"><p>We have been having extensive discussions around open source stra [...]
AI Mania Is Eviscerating Global Decision-Making 🔗
<p><strong><a href="https://ludic.mataroa.blog/blog/ai-mania-is-eviscerating-global-decision-making/">AI Mania Is Eviscerating Global Decision-M [...]
Claude Code uses Bun written in Rust now 🔗
<p>In <a href="https://bun.com/blog/bun-in-rust">Rewriting Bun in Rust</a> Jarred Sumner made the following claim:</p> <blockquote> <p>Claude Cod [...]
SQLite Query Explainer 🔗
<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/sqlite-query-explainer">SQLite Query Explainer</a></p> <p>Jul [...]
Claude make Fable 5 permanent 🔗
<p><strong><a href="https://twitter.com/claudeai/status/2078302415804379218">Claude make Fable 5 permanent</a></strong></p> An update from the < [...]
nascheme/quixote 🔗
<p><strong><a href="https://github.com/nascheme/quixote">nascheme/quixote</a></strong></p> A certain vintage of Python web nerd might be delight [...]
Quoting Kimi K3 🔗
<blockquote cite="https://news.ycombinator.com/item?id=48935342#48936515"><p>Is there something I can actually help you with today?</p></blockquo [...]
LLM cliché highlighter 🔗
<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/llm-cliche-highlighter">LLM cliché highlighter</a></p> <p>I g [...]
Spot birds not golf 🔗
<p>Suggestion for hyperscalers feeling pressure over data center water use:</p> <p>Buy up a few exclusive country clubs, convert the golf courses [...]
Firefox in WebAssembly 🔗
<p><strong><a href="https://developer.puter.com/labs/firefox-wasm/">Firefox in WebAssembly</a></strong></p> This is absurdly cool: Puter compile [...]
Kimi K3, and what we can still learn from the pelican benchmark 🔗
<p>Chinese AI lab Moonshot AI <a href="https://www.kimi.com/blog/kimi-k3">announced Kimi K3</a> this morning, describing it as their "most capabl [...]
Quoting Thibault Sottiaux 🔗
<blockquote cite="https://twitter.com/thsottiaux/status/2077630111499882637"><p>On file deletions. We’ve investigated a handful of reports where [...]
Inkling: Our open-weights model 🔗
<p><strong><a href="https://thinkingmachines.ai/news/introducing-inkling/">Inkling: Our open-weights model</a></strong></p> Mira Murati's Thinki [...]
Mermaid to ASCII art (mermaid-ascii) 🔗
<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/mermaid-ascii">Mermaid to ASCII art (mermaid-ascii)</a></p> < [...]
Quoting Linus Torvalds 🔗
<blockquote cite="https://lore.kernel.org/linux-media/CAHk-=wi4zC+Ze8e+p3tMv8TtG_80KzsZ1syL9anBtmEh5Z40vg@mail.gmail.com/"><p>I realize that some [...]
Mermaid to Unicode box art (grok-mermaid) 🔗
<p><strong>Tool:</strong> <a href="https://tools.simonwillison.net/grok-mermaid">Mermaid to Unicode box art (grok-mermaid)</a></p> [...]